- OnePlus 5 Android 8 works great in all countries, just install the app and go.- Android 9 in some countries works good because the call recording feature is enabled, just install the app and go.- Android 9 in some countries you can't record the caller's voice because the call recording feature is disabled. In this case you should root the phone then this app can fix the problem perfectly. Otherwise all recorders in the market don't work well for sure.